To create a polyline
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1    In the Graph Annotation Tools toolbar, click .

2    Place the crosshairs at the point on the graph where you want to begin the polyline and click.

3    Place the crosshairs at the point where you want the first vertex of the polyline and click.

4    Repeat step 3 for each vertex in your polyline.

5    Place the crosshairs at the end-point of your polyline. To complete the polyline, do one of the following:

·    Double-click.

·    Click and select a different tool from the toolbar.